Combined valve device for hot-water heating systems.



G. L. BOTTUM. VALVE DEVICE FOR HOT WATER HEATING SYSTEMS.

COMBiNED APPLICATION m n MAR.4, 1911s.

' Patented J an. 30, 1917. 1

wa I.v Barron, or cn-1caeo,-m1.mois.

'coiunmnn VALVE Taco! whom it may concern:

Be it known that I, Gnoncn L. BorrUM, ta-citizen of the United States, residin at Ghicago,-in the county. of Cook and tate 5 of 'Ilhnois, have invented new and useful Improvements in Combined Valve Dev ces for Hot-Water Heatin Systems, of whlcli the following is a speci cation, reference being had to the accompanying drawings, forming a part thereof.

The purpose-;.of this-invention is to provide an improved valvular device for reliev'ing the return pipes-of a hot water -s'ys tom '0 air and reventing the intake Of'fllll ls-thereinto-and e escape of water through the air vent. i

A further purpose is to rovide aunitary dcviee for accomplishing t e purpose above stated and at the same time preventing the escape of steam through the air vent.

Itconsists in the elements and features of construction shown, and described as" indicated in the claims,

Inthe drawin s: Figure 1 is a sectional zsside elevation 0 a device embodying this invention, section" beingrinade axially with res ect to the several valves. Fig. 2 is adetai' section axial with respect to the air-vent and back check valve device, showing the latter in a modified form. I

The device as a whole comprisesa .valve body or casing,.A, composed of several memhere as will hereinafter be more specifically described for convenience of assembling,

said casing having an inlet at A and an outlet at A and a continuous passage, from the inlet to. the outlet, and having located toward the outlet end two valve seats, b and i B, the former facing-away from the outlet '40 and the latter facin toward the outlet, and

a valvular device, which in the form shown in Fig. 1, is a double faced valve po sitioned between the two seats, 6 and B, for

seating thereupon respectively by movement in opposite directions. In the passe e be- .low said valve seats there is containe and retained by an apertured diaphragm or spider, D, a hollowball or float, E, which normally in the absenceof liquid in aid passage, rests upon said spiiierwhil'e the valve, C, rests by avityupon itsl'ower, seat, B;

but when said passage blacomes occh ied by Water, the float being lifted there y, en.- counters the .valve, G, which for that pur 5 pose has a stem or projection, 0 extending 'fdojwn through its lower seat so as to be s ec gaunt ,of Letters Patent.

elements necessary for this last has? non nor-warns, nnn rmo srsrnms.

Patented Jan. 30.

Apillication flled larch 4, 1916. Serial m. 82,034.

nearly "in contact with -the ball when the latter rests upon the spider, and when the liquid has risen to a predetermined height in said passage, the valve, 6," is lifted by the 50' float up against its upper seat, t, and there remains-until the watersubsides. It will be Y observed that in the lower osition of the valye, G, resting upon the va ve seat, B, airwhich may enter at the inlet end of the de .05 vice from the waterin the return pi of the system, will pass I) the float an will escape past the valve,. whose -Weight restmg upon its seat is not sufiicient to prevent such escape of air, very slight pressure he -7o mgiadequate to force the way, and will pass out freely through the outlet; but if water follows the air, occu ying the passage and lifting the, float, be ore'the water reaches the level of the lower valve seat, B, the valve will be forced against its u per seat, 6, closing thepassage against t e escape ofthe water, and any further rise of the water will only operate to force the valve more firmly to its seat. On the other hand, if by reces- '80 sion of the water in the system, -the re should be induced a back-flowof air tending to come in through the outlet, the valve, C, resting upon 1 lower seat, will operate as an effectual check valve to prevent-such "airlnflow. Y

At the same point in-the hot water system at which-a device for'the'purpose of that above described is needed, it is desir-f-= able and substanti. 1y necessarytoprovidtld means to revent-t esca eofstam in-a'ny; 7

tea in ,w ich. the ater ecometj' ghea 'tedto a temperature for enerating'ste'am', and

'is important that the elements'meoessary and. theta entio'ned a purpose of preventing-the escapeof=.steam should becombined in a unitary. devioeyo which the parts provided for-the severalpurposes shall cooperate and not interferemo with each other nor require separate at-. tachment to the system. For this purpose there is provided at the inlet, A, a valve seat, aflnnd in tliep'assa abovev said seat there issuspended-fro'm t e a rtured dia- 1195 phragm 0r spider, D, a'valjve, adapted-to scat downwardly upon the valve seat," a, the suspendin device being a heat-respon: sive e-xpansib e member, G, adapted-to 'be r for the purposes above descri expanded by change of temperature from the normal tem erature of the water in the return pip'e of t e to the temperature'{ I of steam, sufficiently to lower the valve from an elevated positlon at which. the port throughthe seat, a, issufliciently-open for all purposes, to a position seating on said seat. The expansible member, G, may be any form' of device adapted to. afford the necessary amount of movementby its expansion under the change of temperature 1ndicated.- Preferably it is of the form shown in the drawings consisting in a plurality of fiat disk-like chambers having their cavities inter-communicating through flexible'diziphragms or heads of said chambers, the chambers being filled with some suitablediquid adapted to expand under the change of temperatureto the necessary extent.

a tion. which is, however, substantially shogvn. in my Patent No. 1,147,297,.Tuly 20,- 191 The iparticulan structure of this element may be' readily understood from the exterior form as shown in the drawings without illustration of the interior construc- For I convenience 3 in constructing and. as-

semblingthe device, the body, A, comprises four' arts rigidlyconnected together; to-

. wit: t e lower part or member, A, having the inlet,'A ,"and the valve seat a; the middle part,'.A*, which is provided at'its lower end with. the apertured diaphragm or spider, D,' fpr'checking the float, E, and which is at that end screwed into the upper end of the part, A, the, upper part, A which has the oiitlet, A and the. upper valveseat,

-' the parts sothat the double. faced valve, C

. Y ead of said i a threaded can '50 doubly faced valveg'Q, located: between its j two"seats";Itherem'ay 'eadouble-faced seat,

- and a-valve having'tvge niembers between which' the s'catis positioned. Such construe. ig, 2, the two'valve mem 1 b, and li'isill'y, the centrally apertured dia phragm orannular part, B Whioh'has the upwardly facing valve seat,"B, and which is bound between-the flanges, a. and a? of the parts, A and A, respectively. This construction permits the ready assembling of maybe positioned between its two seats,-

" V and B. "In this construction the heat-re sponsive or thermostatic member, G, is suspended fron athe apertured diaphragm or spider, F, by means of the 'threaded stem, g, uiper diaphragm or v and, screwed into rotruding from, the

ember, p rel aperture. ofthespider. It will' be obvious 'thatgihstead-of the tion is'sh'own-in hers, C and C constituting together a sin- I having a sole'in et at the lower part and a an outlet at the upper part and a continu ous passage from the'inlet to the outlet, of a valve at the upper part seating upwardly for prcventingliquid outflow an apertured diaphragm or spider below said valve and a float retained by said spider below the valve in position for uplifting the valve to its seat upon rise ofliqu-id in the passage to a predetermined height; a valve suspended from the spider'and a seat for said valve at' the inlet,- the suspending means being heat-responsive or thermostatic menu her adapted toexpand for lowering the valve to its seat uponrise of temperature";

to a given degree above the normal, and to contract for lifting thevalve from its sea-t. upon fall. of temperature fromthat-point,

2. The combination in a single unitary Vfitting comprising, a valve casing or body having an inlet at thelower-part and an air outlet at the upper art-and-a' continuous passage from'the inletto theoutlet, of a check valve located toward theoutlet endseating. downward for preventing back-flow of air through said optlet; a valveconstituting the sole control 'of the. inlet'port and seatingf outw-ardly thereat; an apertured diaphragm or spider intermediatethe twovaljves', said inlet valve being suspended from said spider, the suspending means con- 1 the valve its seat 'risb-ot-teinperature above pm: normal.-

hand at Chicago, -Illinoi 'of March,'1 l16-.' I.

esonen.

In'testiinony whereof I have hereunto setthis and day sis! .ng of a heat-responsive, or thermostatic member adapted to expand for lowering upon a predetermined 

